. >> reporter: peta has filed a complaint with the department of agriculture. >> it's hard to say if killer whales are playing rough or if these are just aggressive interactions between individuals. >> reporter: seaworld says veterinarians determined the injury is not an animal bite. and provided this video to abc news, showing him now on the mend. trainers and veterinarians say they are closely monitoring his recovery and treating him with antibiot antibiotics. >> he's doing very well, interacting with all of the whales at seaworld. >> reporter: experts say it's a reminder that these cute, capti captive creatures are wild and dangerous. for abc news, cecilia vega, abc news, los angeles. >>> now, the big surprise for next year's oscars. seth macfarlane, who created "the family guy" cartoon has been cast as the host. chris connelly has more on this out-of-the box pick. >> oh, the mic's over there. this is what happens when you don't come to rehearsal. >> reporter: he will now. unlike at the emmys because seth mcfarlane will be hosting the academy awards. >> this should be huge news to